Rename quic::kMaxPacketSize to quic::kMaxOutgoingPacketSize

As part of cl/242197597, QUIC now has separate values for maximum incoming and outgoing packet sizes. This CL renames the constant to be clearer.

gfe-relnote: constant rename, no functional impact
PiperOrigin-RevId: 242708648
Change-Id: I3f440ba44b9c12394026116aaecdd2c166cc63b6
diff --git a/quic/core/crypto/quic_crypto_server_config.cc b/quic/core/crypto/quic_crypto_server_config.cc
index 478e929..88875be 100644
--- a/quic/core/crypto/quic_crypto_server_config.cc
+++ b/quic/core/crypto/quic_crypto_server_config.cc
@@ -910,11 +910,11 @@
       return;
     }
 
-    char plaintext[kMaxPacketSize];
+    char plaintext[kMaxOutgoingPacketSize];
     size_t plaintext_length = 0;
     const bool success = crypters.decrypter->DecryptPacket(
         0 /* packet number */, QuicStringPiece() /* associated data */,
-        cetv_ciphertext, plaintext, &plaintext_length, kMaxPacketSize);
+        cetv_ciphertext, plaintext, &plaintext_length, kMaxOutgoingPacketSize);
     if (!success) {
       context->Fail(QUIC_INVALID_CRYPTO_MESSAGE_PARAMETER,
                     "CETV decryption failure");